You betcha.
I shoot a LeicaMP to go with my M8.
I also play with a re-built Pentax Spotmatic SP2 with its wonderful 50/1.4 and an assortment of fine glass I found for almost nothing. The camera was a gift from a dear friend, I had it re-built by LeZot in Burlington,VT, and have added a 135/3.5, 200/4.0 and 300/6.3 .
Would prefer the nice 300/4.0, but they are bringing a good bit.
I also use the 35/3.5, about the size of the Summicron 35. Really great glass, all manual.
Mostly shoot Fuji Pro 800 or 400, but in the Leica it's Ektar, Kodak 160 Portra, and Plus X.