I still use fingers for most things, which also really helps when I go ultralight fishing. Four pound test fishing line feels like a garden hose next to 43 gauge wire.
On my Stevens winder, I'm still using the weirdo tensioners I got when I bought it. Here is an example.
The only problem was trying to find spare parts - there aren't any. Also, the tensioner has to be kept obsessively spotlessly clean with no lube anywhere
or it will break the wire. However, it works great as long as you don't wind too fast... or the wire wasn't put on the spool too tight or too loose...
or the electric brake was maladjusted... or the moon was full...