Lol!
The guy says his most used lens is a Leica 35mm 1.4 ASPH and yet people are on here recommending cheap-ass garage sale classics for $10. Unless you have used an M 35mm 1.4 ASPH for a length of time, you have no idea what a spectacular negative or slide this now $3,000 used lens produces, I had one for 3 years before I sold off most of my Leica gear in favor of my Hasselblad stuff. I do have one M3 and a 50 Lux left, all the Leica I need.
I'm not saying it is all about the camera, but if you intend to compete in Formula One, you don't show up in a restored 1965 Ferrari.
If one wants to *really* experience the jump in image quality from 35 to 120, then put the glass first, especially coming from Leica folks. If hooked, he can do more research and pick the camera or system that works best for him.
My wife and I are going to be traveling abroad for three weeks next year. I could bring my Nikons, the Leica M3 with the Xpan, Hassy or 4x5. I am bringing a 501CM with a 60 and 100 and two backs, I daily carry a 501CM all the time, at least a few times a week, it's not much bigger than an SLR and it is a joy to use, great self promotion too.
It's all relative I guess....