I don't think you're making a mistake since you're going with it for aesthetic reasons. I have the portrait suite in my downstairs bath (pedestal sink though) and it seems like you're using it for the look. IMO it's really just the plain drop-ins that have no style to them that look less expesnive. The portrait series doesn't "look cheap" to me. It's the whole package IMO, not just any one element. The type of vanity and countertop you install it in will have as much of an impact as whether it is undermount or not.

If you are using standard base cabinets with countertop height at 36", a vessel sink will be too high to actually use for anything but face washing for a very tall person. It would take a 30" high countertop to be able to be used for glass washing and rinsing, which is the most common usage of bar sinks. Most also don't have very "square" sides to be able to fill them up with soapy water and glasses, and they're not very deep, so the don't hold very much. One of the best uses of a (nice sized) bar sink is to hold ice and beverages for a "event" and I can't see you doing this with a vessel sink. Now, take a beautiful glass vessel sink and recess it slightly into the counter, underlight it, and get some pretty river pebbles and a fountain pump and you'd have a great water feature, but to actually use it as a bar sink---I don't think you'd be happy.

There is one major con with glass vessel sinks. Scroll down this thread until you see the walnut vanity with the blue mess on top of it, then enlarge the photo. Glass sinks sometimes do that. [See a blue glass vessel sink on walnut vanity. [(https://www.houzz.com/discussions/vessel-sink-on-a-narrow-vanity-dsvw-vd~5275992) It only happens occasionally. It is not predictable. I would google it and see how often it happens, then make a decision. Are you sure you like glass better than metal or porcelain or stone?

Mtn, this is mostly a guest bath, although it's a full main floor bathroom. I use the toilet instead of trekking upstairs to use my bath (I live alone). And, of course, the sink for handwashing. Before covid, I had fairly frequent overnight guests, but I don't hang with women who wear make-up, so the lighting in the bathroom for that task isn't critical. My grandson uses it when he's here and he's a bit of a stickler about styling his hair, but that's about the only thing that mirror is actually "used" for. Would that change your mind about pendants?