Harbor freight corded variable speed drill
https://www.harborfreight.com/38-in-variable-speed-reversible-drill-60614.html
can usually be found @ circa $13 with coupon.! Lighter than a hammer drill and, at that price virtually disposable. I have 2 and the original one is at 6 years now and I hav not needed the replacement....
I rarely use the brass brush \ unless i am trying to "bring back" a pairr that has sustained a lot of abuse. Need to run it at max 1000rpm if you do use it and personally at that stage i prefer a to use a steel hand brush. Also on the black horsehair there are 2 versions (at least in the Swix - and the red creek and Took are all the same with different branding) - there is a "hard" horsehair which if you put some pressure on it can put a linear structure on your skis!!
and a "softer" horsehair which is tthe one I use post scraping for first pass and is probably the most used in my collection. i will admit that for training/everyday I dont always bother with the nylon, just a couple of passes with the "soft"horsehair. Of course for race day a whole different beeswax...