Welcome the to Forums, lovethemusic. Glad to have you here.
You asked a very interesting question, and one that isn't, nearly as I can tell, readily answered elsewhere on this site so hopefully someone with experience with both the stock caps and V-Caps will chime in.
The V-Cap is offered as an upgrade, and while I may have missed it, there is very little information about the upgrade on the Torii product page. A shame too, because Steve does a very good job elsewhere contrasting the sound one can get from the different input, rectifier, and voltage regulator tubes one can install.
I noted on the Torii MK II Design Notes that Steve recommended not changing the coupling caps.
"The audiophiles favorite part [coupling caps] to modify... on the new TORII we recommend you please don't. The caps used have been selected for their benchmark coherency and the popular boutique audiophile caps have all been tried". However, my thought is that any product, designed to a particular price point, might be improved through substitution of different parts. I am not saying that Steve hasn't taken this amp as far as it can go, maybe he indeed has, but unless someone who has tried various caps can state definitively, at least for his gear /room/ ears that the stock caps are as good as it gets, then one can rightly wonder about the effects of different caps.
Anyway, welcome again. It's a quiet place, but there are some very helpul members here. Don't let the lack of response put you off from giving the Torii a try.