Yep, it's pretty rare for me to be playing and NOT be testing a prototype of some sort. In fact I can't remember the last time that happened.
I suspect it's the same for many of us here that work in the industry, and many here that like to Tinker too.
For instance, I played the whole of the UWL at World Cup (and won our division) with a prototype and other than Jack (and the Sandbaggers), one ref, and a couple of guys on my team, very few people noticed. Heck it wasn't until we had finished the final that one guy on my team asked me what I was playing with.