I have bulk loaded for 40+ years. I use a Jobo loader and have no experience with other types. IMHO it is easier than loading film in any type of spool, plastic or stainless.

I get 18, sometimes 19 rolls of 36-frame out of 100 ft. I'd recommend rolling your film to suit the sleeves you use for your negs, and your tank spools. Many tank spools will hold no more than 36-frame rolls, and then only if the leader is not too long.

With practice you will learn exactly how many turns it takes to roll the number of frames you want.

My loader has a felt light seal; I have never had any issues with dust. I keep the loader inside a plastic bag, and take it out of the bag just for loading.