This doesn't sound like the developer for folks who only process on or two rolls at a time. However, from all I've read, the labs for Eisenstaedt and Cartier-Bresson used 777 pretty much exclusively and of course both of them only used the Leica.
35mm shouldn't be much of a problem ...
it's not hard to put roll film reels in a basket or straighten
a coat hanger and slide reels a it and process it in a deep tank. I used to do
this often in a big 3l Tupperware bin, and before that in a 5 gallon tank that also was used to
hanger process 5-7 sheet film. you just raise and lower the wire/film a little bit to agitate it,
and you have to be careful putting it in and out because or surge marks ( just like hangered film ).
like with a lot of these seasoned tank developers, the more you use it, the better it gets. we used DK50 a lot
i heard about people who used it as a 1shot developer and complained it gave too much contrast or other things ..
and i had never experienced that because it mellowed after a bit, and when you counted up
how many films went through it, and decided to make some more, you always left a bunch of developer
in the tank to mellow out the new batch ( pre seasoned ). while i havenb't ever used 777, from all reports
( and the unblinking eye article ) it is the same sort of thing.
YMMV ov course.