AT vs Alpine in the Resort ???

Always a good call to demo, but beside that I'd say without a doubt get dedicated alpine gear for resort skiing unless you're pinched for $. Don't torment over the hypothetical details. You won't regret it if you're going to ski more than a few days a season in bounds.

From a practical standpoint you can get a great pair of last year's or used skis that work great in all conditions for not much money & bindings are cheap and extremely durable so why put the wear and tear on your pricey and less durable (inarguable) AT gear which is not going to ski as well anyway?

Spending the time and money to find boots you love is a bigger investment, but once done you will get at least 5 years out of them.

Inbound skiing on any sort of gear will improve your AT skiing, you'll just have more fun doing it on alpine gear.

If your Vulcans have a sole that meets the ISO 9523 standard, you could use them inbounds with a binding like the Marker Squire ID that is designed to work with touring boots.

That's what I did with my Maestrales. Works like a charm.

Just don't take the bindings to REI to get mounted, they don't know shit...

Due to too much kid stuff, I've done very little backcountry in the last few years. For the 5 past seasons I skied mostly resorts in Washington & Colorado; on Dynafit Titan boots, G3 Onyx bindings, mounted on 186 Atomic Charter's. Never had a pre-release; only popped out a couple of times in major crash events.

Really happy with the package at resorts.

If I'm at a resort, say Bachelor or The Southern Resort,
I would have no concern about riding tech gear daily.

I use my alpine touring tech gear in bounds about 10 days a year with no issues. Although I ski pretty fast when conditions are smooth and/or soft, I don't pound through bumps or catch air on a regular basis. Having the right skis is important. I mostly use K2 Hardsides in bounds, which are pretty sturdy skis. I haven't' skied with alpine boots and binding in many years so I may not know what I'm missing.

Take advantage of the sweet sales and get yourself another set up! I recently bought a brand new pair of fatty pow skis and brand new Warden bindings for about $280 total. I've been liking the Tyrolia Attack 12 and 13 bindings lately ( they ride nice and have a sturdy looking metal piece where the heel mounts to the ski) but found the Wardens for a way better deal so going to give them a try. The fact that they are still unmounted in my living room is probably what brought in the sweet powder over the past few days but luckily I have a couple other pairs of pow skis. Moar Skis!