I don’t think Tom would incur any charges, by getting an outdoor. I now have two, and I am grandfathered in to my free subscription on both. There is nothing in particular that makes them any different. A few little features here and there, but none that would have been a deal breaker for me in their absence.
I’m going to try and make use of photo capture, with one of mine, but had it not been there, I would still have got it, because I needed one more camera. The other outdoor I got, was a replacement for the first one, where they said feel free to keep the first one and make use of it if you can, so I did.
In any case, I think when Tom reports back, we’ll find that his night vision has now improved, having changed the position of his strap.