I've just left the green stuff. QHI, 3500hrs mainly Lx & Gaz. With only 350hrs stiff-wing - piston SE. Scraped together a frozen ATPL(A) having had an (H) for about 10 years but never used it. Minimal procedural IF experience. Just started training on B757 with major carrier and enjoying the challenge and the money. Perks are good so far but I've yet to get anywhere near the line and start working! I do miss Helos but I guess I'll get used to it. My stick-buddy on the course is also ex Helo (N.Sea).
It's a sweat but there are Jet jobs out there for ex-rotary - good luck.