I bought a used XE-1 one year ago after shooting only film (and the occasional snapshot with my phone). What can I say, I still shoot film most of the time - I'am convinced by now, though that it would be the same had I bought a digital M. I just prefer film, that's what I know now.
Regarding LTM adapters, I used a cheap one from eBay and had no complaints using a summaron and the 25mm skopar. If you expect a similar experience to a rangefInder when using manual focus lenses you will be disappointed, though. I find it totally awkward.
Just my experience... still a nice camera... kinda