[I 1st posted it as a reply but thought I'd blog it]
I've started using my own scooter while out. I've decided that it's a positive step as -
I can be out for a bit longer;
I can get further;
the pain is less;
more quality time with friends as I'm not struggling to breathe/move/keep up;
I get to be out where life is going on;
I meet nice people who smile or pass a moment [eg "cold today"] or ask if I can reach;
I'm acknowledged as a person - not invisible, I exist!
I get to be independent.
I know there are negatives but they're the same as everyday when I'm on my crutch [es] so they aren't botherable [ I just made that word up! ]
try the scooters out in supermarkets first. I hope this might help someone.