FTP is easy, and setting up a monticello repo like this takes no time.Especially on whatever shared hosting account, my NAS, on my own box where I can share the package-cache folder that way.
And it can be browsed as well.
I am not in the mood of maintaining an STH instance with mongo and friends.
I tried filetree and gitfiletree but those weren't supporting my workflow easily enough (and for some reason, I got a corrupt something w/ Bitbucket which let me fight with it for a full damn day).
Keep FTP alive.
Phil