A description of what your problem is:

The 'auto-equip' feature (something like that) of when Equipment Manager module 'procs' is bothering me:

• Example 1: I have SET1 set to a SPEC1. Whenever I equip certain TELEPORT equipment items, say, The Orgrimmar/Stormwind Cloaks, this module will either CANCEL the cast, and/or UNNEQUIP those items. This happens mostly on my Hunters (Class).
• Example 2: Whenever I equip a non-SET item, the module (pretty sure it's it, since I've made some tests) will IMMEDIATELLY swap in the set one, not even giving us time to 'resave' the SET with the new piece.

Describe the final outcome you would except
A description of what you want to happen or would be ok with if not exactly able to do that:

One workaround, if possible, is to increase the TIME for the module to swap into the slots the saved SET items.
Another one is to, let's say, either the above works with the teleport items, like the cloaks (for example, give ~10s for the module to reswap back the set items.
And lastly, to make it so that ANY non-set items equipped are swapped out, with some exclusions (maybe configured in a list, like Fishing Hats, and other equipment). For these, maybe input some conditionals for the module to reswap the set items, like changing zones, for example.

Describe other alternative ideas/addons you have considered
A description of any alternative solutions or features you havve considered. Sometimes it's better to use another addon if it has what you want.

I've tried another addon (don't remember the name right now) which was a bit more complex with this part, but too complex. I don't only use S&L for this equipment module, but I'd like for it to be more configurable, if possible.

enable the block button and use it to temp disable switching until u are ready

I have it enabled by default (as it seems to be on default when enabled, the block button), but, by default, how is it possible that only certain characters/classes, when using the same item (i.e. Cloak of Coordination), the addon doesn't behave the same.

Yes, I have pretty much the same settings, only changing the 'names' of the sets, to match those of the specs I'm playing:
Example, on said hunters, where the addon cancels/swaps back the cloak slot, even mid casting of the teleports, I've got, a set named SV (survival) with the [conditionals], and same teleport cloak, on a Death Knight, for example on Blood spec, the same module doesn't cancel/swap back the cloak slot, letting the full ~10s cast go off, then swapping back the 'original' cloak, by itself.

I do know about that button, but I've mainly used it on the cases above, like on niche classes/specs where I know the module is behaving like that, or, as in my first post, when I'm swapping in 'better' pieces of equipment then 'saving' it on the set. The module doesn't give me enough time for this, as within 2-5s it swaps back the old item even, in some cases (hence, maybe give the module at least ~5-10s of time before 'proccing' its swap back).

The whole thing is event based, so when one of those events fires, it does it check.

The 2 most "spammy" events are GROUP_ROSTER_UPDATE and PLAYER_FLAGS_CHANGED so your milage may vary.
The lock button is what you are needing to prevent stuff from swapping, so I would recommend using it to prevent unwanted changes. Not sure what else would help you, maybe an option during the event check to see if u are casting and if so, bail out of changing gear and let that be an option.