I run Nogatech WinTV/FM, Delorme USB GPS, Logitech Xtreme 3D joystick, and XM Direct via USB into a belkin Hub on my Fujitsu 3500 tablet with no problems whatsoever. Keep in mind the USB is only getting used for the WinTV and XM when commands are being sent. The GPS and joystick are locked at 9600 baud with no conflicts and few collisions.
Go for it, but be apprised that the new USB hubs require power. I found 1.1 non-powered hubs at my local mom and pop computer store. I will be testing powered hubs this spring when I begin adding 4 more USB devices.