I have never managed to get (qt)mobilehotspot work properly. Qtmobilehotspot does wifi only and loads of stuff has problems with adhoc mode. And it makes my n900 reboot sometimes.
Mobilehotspot does know USB sharing, but it also tends to make my n900 reboot.

Might be related to KP and/or CSSU-thumb, but the n900 is otherwise rock-stable.

And anyway, for a USB connection most of the stuff is already there, my laptop and netbook connect perfectly in pc-suite mode.

Just looking to get that working on a non-GUI and non-networkmanager platform...
Plan is to have the wifi pineapple act as my mobile hotspot regardless of wifi client or 3G connection, and tunnel everything via sshuttle to my home network.