I've always found indent based folding to work well, since the code is indented anyway

Nice trick!

Conjure + Parinfer works for me. I don't really use folding though, so I don't have a plugin for that.

Is there a paredit plugin for vim?

I don't use it, but I think there's something called "vim sexprs for regular people" or something like that, by his holyness tpope

Yes. This plugin builds on vim-sexp. And I am using it happily

I used parinfer before, then calva which has paredit, and now coming back I don't know how I made parinfer ever work before… Perhaps just timing, since I was working with large maps at that moment, and I just lost context of what level of indentation is right when the whole map didn't fit on the screen. So editing forms with parinfer was very painful counting of parentheses

Now trying to come to grips with the usual sexp plugins

I use the very old https://github.com/gberenfield/cljfold.vim, with https://github.com/justone/dotfiles-personal/blob/personal/.vimrc#L514, works very well. No folding within functions, found that to be overbearing in Go and so never looked for that in Clojure.