I've got the 7A 35mm f/1.2 in M43 which is pretty nice for a walkaround lens.

I'd probably opt for the 50mm f/1.2 since it's 1/3 the price of the f/1.05 (£90 vs £260 for the M43 mount) if I didn't already have double-digit number of 50s in PK mount that I use with an adapter (and they're surprisingly good for 30-50 year old lenses.)

(I've got a 7A 10mm f/3.5 that I've not really got around to using much but now the UK is heading into Fake Summer, there's more light to make it useful.)