Altogether that cost under �400 fitted, I'd be happy to put you in touch with the fabricator, he has a facebook page, and did have a website, however that is currently down. No heat issues as the cans are insulated, and as for pillions my partner rides every day for 50 miles+ and she thinks it is no different to standard for comfort.
I'll post a full review and better pics once the final touches are done in about a week