...I think my heart stopped a little seeing the taken off faceplate and exposed pierce connection port. mostly because I am big on keeping my things together and unharmed and would feel horrible to remove the plate (unless it was designed for it like the Tama-Go).
I don't think the gems are that big a deal, honestly. I don't even pay attention to them while I play with my Tamas. I find it odd how they stick out, so it's not as smooth, but it actually prevents me from dropping them by having more grip, too.
It's different for guys. I know what you're saying, but that doesn't mean others don't notice them. Personally, I would not be caught dead with a blinged out P's at my high school...No way.