If you are using ball powders, no issue with nearly any powder thrower, for stick powders, the longer they are the worse they are to throw. I threw ball powders for my Schuetzen rifle on the bench, into the case, at the range, all the tests I did with it with it held .1gr, shot around 35k rounds that way. I still use it with AA1680 and 2230 for my 218Bee and 223Rem these days, it's faster than setting up a Chargemaster or Autotrickler, which I also have now. I used a Lyman 55 and a Redding BR3, still have and use the BR3. I didn't see any advantage using stick powders in them, just used a beam scale back then, they were more of a PITA than using the thrower was worth to me. Chargemasters were 15 yrs away at the time. Often threatened to buy a Harrel to check it out, see if they really did handle sticks any better, even 15 yrs ago there were a lot of conflicting stories on a Harrel and stick powders. There were a couple of others that proclaimed they handled sticks at the time, they aren't around anymore except maybe at some estate sales.
You can certainly use one and trickle up, I've used the smallest Lee scoop in the scoop kit since near Day 1 for that. I thoroughly dislike the RCBS type tricklers, used the scoops for loading the beam scale for 30 yrs before getting a Chargemaster, and can do it nearly as fast as the Chargemaster, even with ctges like 7RM. May be more worthwhile for you to try out something like Staball Match or 6.5 for what you are doing, bothe can work in your charge range, Match is a closer fit to Varget/IMR4064, see if it acccomplishes what you want it to do.