Really this is just about seeing what’s available in the new QuickSampler in LogicX, and as far as this tricks concerned, its pretty primitive compared to SOME of the tools out there, but given you can lock the loop lengths and start points to quantise values, it lets you do some fun stuff!
Just set up the CC’s in the mod matrix to 2 faders on your keyboard or whatever…
Start and Loop start to the same CC and Loops End to a second CC.