Can't say I have and I'm not really sure I'd want one like that. I'm sure it would look great but the reflection factor sounds like it would be a problem for me. I wouldn't think it would be all that hard to do but it would take some time and a lot of polishing tools.
I really like the stainless models as they are now. But I never liked those nickle or chromed pistols you used to see a lot back when. Maybe if it was going to be a display piece, but not something I'm going to take out and play with.
If you do it post a pic. I would be interested in how it worked out.