That’s not bad, using the clip loader to feed the rounds in. Pre-loading ammo on stripper clips would speed up his mag loading process even more (as long as you forget about how long it took you to load the ammo on strippers).well, just for $hits and giggles went on YOUTUBE and found a video of a old codger loading a D60 rather quickly
some of us old codgers, which I count myself one of those, can make, modify or find an easier way to do things
https://www.youtube.com/watch?v=_bKsBebw7ts
Regarding the stripper type loader wearing out plastic feed lips, I think that’s less of an issue here. The stripper loader serves more as a guide, but the lever is still being used to take the tension off the spring, so it shouldn’t tear up the feed lips in the same manner.
On the Beta Mags, I tried the supplied stripper loader. I find the LULA to be a better option anyway, so that’s what I use there.