Hi, yeah, you can record clips or any length by pressing shift and length across the bottom and then turn off launch quantisation by pressing shift and ‘1’ (none) across the bottom. That allows you to have loops of different lengths running un-synced in terms of launch timing and length.
The only weakness I am aware of (maybe wrong) but is that all the loops will be in 4/4. Of course you can ‘fudge’ that a bit by playing really long loops without a click, and the fact they can be launched freely still gives the illusion of different timings going on.