I tapped an alt to experiment with the Open Sim take on Reborn... I have tested Reborn in SL via demos (also with an alt), and I don't recall it cracking 300k in the complexity rating. So... Ok, great for photos, but I'd pass on it if you want to go clubbing on the dance floor, especially a crowded one. Most people won't be able to see your Reborn creations... you will be a gray doll to many. For now, it's best to stick with Decadence, Athena or one of the curvy Ruth2 mods.
(BTW, this ensemble is 600,000 on the complexity scale!)