I would primarily use it for work through a VPN. I am unclear as to whether connecting to work through a VPN you actually use up your download capacity or if the VPN just lets you see what is happening on your work servers (does that make sense?)
That would have a bearing on what I signed up for.
The helpdesk I spoke to were less than helpful :(. Any ‘experts’ out there that can shed some light?
Depends how much you plan to use. I have a 3 3gig a month deal for £15 which is OK. I actually use only a couple of hundred mb per month and so will be switching to a vodafone pay as you go deal with no time limit, once my contract is up in March.