I haven't tried it but I do have the njoy pure wand and my g-spot swears by it...trust me. I am not a fan of vibrators and this has always done crazy things for me. I squirted (not like crazy in porn) with this toy before a couple of times.
http://www.njoytoys.com/images/products/specs/NJ_pure_spec_web.jpg
njoy: pure/fun
It is cold for maybe a second going in if you don't hold it in your had for a little bit. I usually put it on my belly and it gets warm enough and it's not really an issue.
The bigger side of it is a bit difficult to get in (maybe I'm just tight, as I've been told) but if I push enough it goes.
I can't imagine trying the 11 but once I can afford it, I seriously want to try it. The bigger side on the pure wand is 1.5" in diameter and the smaller end of that one is even bigger. I think steel is a bit different since there's no give though versus something more lifelike.
As far as the weight of the eleven, I think 3 lbs sounds like a lot but that weight would feel good I think. I remember being shocked at how heavy the pure wand was (1.5 lbs) but really it's not that big of a deal.