Sorry, no reason to stop you.
We have one..it's brilliant, not just for us, but helping others to fill their bottles when 000's of miles from civilisation.
We were in Suwarrow in 2014 and one boat had wrapped their chain around a bommie. He soon ran out of air and asked me "you don't have a compressor on board do you?", YUP we do, and two full bottles...so bring your bottle and take one of ours while I fill yours ! ... got him out of trouble!
Only down side is it is VERY NOISY !!
Overall you won't regret it.
It's only money after all. What else are you going to do with it ?