I have an obscure vision of you being a bit of a Salmon! That's not intended as an insult, just a suggestion that most of the fish are fighting like mad to get upstream!
I've been flying helo's for fifteen years in a variety of roles and can honestly say I would not swap a day of it (Well perhaps a couple of IR renewals!). However last year decided to try for fixed wing and am now looking for the right job opportunity.
Even if it does not work out I will be happy in the rotary world but will not be sitting here in ten years time wishing I had had the bottle to try.
So my advice, for what it is worth, is, if you fancy it, go for it!
There are a fair variety of jobs out there at the moment, and with your background I would have thought you would be snapped up.