Have two years on a Rolly Tasker fully battened main. Very happy with the increased performance. We actually have to use a winch now sometimes to pull it in. Service was great, price ridiculously low. The battens don't appear to add much weight while hoisting. At least nothing I've noticed. The biggest trick was figuring out how to open the tightly rolled bundle of battens without killing anybody
Last year we added homemade lazy jacks that a sailnet member was kind enough to share on this blog. The full battens really help when dropping the sail in the simple jacks, and really stabilize the sail in general in all conditions.