Well, as this is being typed on an iPad, you may guess that I was able to buy okay.
The staff in Charleston seemed to have no problem with me reserving one but it didn't arrive on time, so I ended up picking one up in Florida today.
For those who have not got one, go ahead. It is great - and ideal for travellers. For all those who eased my mind slightly before I flew over here, many thanks again.
Now I'm off to give this thing a thorough testing!!!