I'm not sure what happened to the Houston rep, if that person even left. The opening may just be a part of the nationwide expansion. Ostomy and Wound/Skin have been splint into they're own divisions creating many new positions throughout the country.
Coloplast is a good company with nice benefits and the products sell well. Most reps make $65-$70k salary with a comp plan of an additional $60K ($125K package). There are contests throughout the year to make extra bucks.