I also just came over from crashplan. I'm glad it was a cheap trial. I have 100mbit both directions, but getting 3-4mbit upload to iDrive. I think maybe it was faster at first, but I can't remember now. I got the 5TB plan and at this rate...it may not be a practical solution. Crashplan wasn't that faster either I do have to say, but with crashplan I found that if I quit and restarted a few times, eventually it would connect to a server that was faster somehow. I think I am getting that idrive somehow puts each user to the same server each time, not sure about that though, just a guess.
I am also using the Linux scripts. Interesting idea bout running manual and scheduled at the same time. I will try that and see what happens, but its not clear to me it wouldn't share some cache stuff and stomp over each other in some way.
Another thing people should be aware of, owner permissions are not preserved. Any files where that matters, iDrive is not a suitable backup solution for most UNIX in my view. But it is cheap right now...so... The idevsutil utility is very nice to work with also, compared to crashplan's java app, which consumed a ton of memory.
Anyway, don't know why I'm griping here, I read two years worth of frustrated people and non-solutions from idrive tech support. I don't know if they are intentionally capping things or if their software is so complicated that its clogging the line somehow...but either way.. the bandwidth limitation is kind of a bummer.