Sure, with an instructor and a few quick lessons a heli pilot can rapidly pick up plank flying. I've taught a few "heli only" pilots without a problem.

Since you're a heli pilot, let me explain the only problem in familiar terms. The main thing to watch out for is minimum forward speed. Your heli will keep flying down to zero and even reverse, but planes don't appreciate that. Some planes with high wing loading will do sudden and drastic things when they run out of flying speed.

Imagine if you HAD to touch your heli down with a minimum of 10 mph forward speed. Get my point? It is an unatural experience for a heli pilot.

Be sure you explore slow speed flying at the edge of a stall before you leave the instructor behind.