Multiple clips are not as versatile and flexible. Imagine a DJ who has to cut a track into sub-tracks instead of using the looper of the mixer/controller. What if you need to change the length of the loop in a live situation? With multiple clips you need to replicate all the effects and settings. If you change e.g. the scale, you have to apply this change to all other sub-tracks.
Maybe the transport tab is the wring place. I'm looking for something which allows me to flexibly define a subpart/area of a clip to be played. Maybe another tab like the BeatLoopr called "Loopr", where you have 8 presets with parameters "in" and "out" and a trigger to enable/disable the loop would do the trick.