Steam beta client backup upload request

I'm looking for a Steam backup (either an actual back-up from Steam's built-in backup utility or an archive of the OSRS beta folder) of the OSRS beta C++ client, and would greatly appreciate if someone could upload a copy somewhere. Presumably, you have to have been accepted into the OSRS Steam beta in order to have it downloadable from Steam.

I'm interested in doing some HiDPI, Linux, and performance testing with it.

I believe the client should be about 10MB or so by itself (I don't know if it downloads other OSRS assets on game start or if it saves them to the actual game folder). I don't mind where it's uploaded (MEGA or Google Drive are the easiest I'm aware of).