Colin,
Yes, I think you do get more work as a result, you certainly get a lot more bookings because of it.
Anyone thinking of buying a unit to save the £25 rental cost - forget it. It would be a false economy because if you drop it or break it you have to pay to have it repaired. If you've got your own and just want a merchant account with a bank then you'll be paying more in transaction charges too.
This is a legitimate business expenses, why filly-faddle around trying to save a few pence. ???We searched out the best deal and went with it and for what it costs per month we get so much more in return - that's business, guy's
Simon