I am as impressed with mesh in Second Life as I am with the speed of growth of prim grass.
Mesh will be problematic for SL for a long time to come: first because not everyone can see it. Second because people are actually trying to create clothing with it (prim attachments to compliment an outfit sure, but as primary parts: epic-fail).
Then there's the LOD issues, which can cause both bandwidth and computer lag as your CPU and video try to not only decipher and build and display mesh, but mesh along with sculpties along with basic prims - and then sim owners who will abuse/over-use mesh in their builds.
As for my builds: I will stay with basic prims and use scultpies to complement, though I know how to model them, I don;t see myself ever using mesh in any of my creations and I'll likely never use any of the aftermarket stuff in my sim builds.
For me: I don;t want Second Life experience to be as realistic as possible, I want it to simply be as immersive as possible. The slippery slope began with WindLight and sculpties.
So, who has the blog that highlight sims screwed-up with mesh that features pictures in a non-mesh viewer?