I found the Nite Ize Stretch holster too bulky. The rotating clip makes the multitool stick out from my belt which makes it feel heavier than it should.
I eventually cut off the front and the cover which reduced the bulkiness somewhat.
The clip rotated by itself sometimes so I super glued it in place to prevent it from moving.
These modifications make it somewhat more useful, though I think it may be polishing a turd.