yup think for simplicity and cost gas heater way to go for many of us ... think Corwoods do one for under £200 and lets be honest gas bottles wont make a massive dent in your profits.
For me if I was going to go hot would prefer to go to pure freedom and get them to fit one of their diesel hot systems ... just my preference as don't fancy diy gas system though i'm sure its easy to do ... i would use it all year round though cos IMHO if its below freezing then you just take day off
I would fit gas if I hadn't spent so much money experimenting with diesel over the years.
When I started the L5 heater was all that was available and I wasn't interested in having to vent the van by leaving the back doors open. Now we have a perfectly good, fit for purpose Meny gas heater that can be used with a roof vent.
I personally would fit an under body LPG vapour tank and rear towbar mounted gas filler. They aren't that expensive and way cheaper than a diesel system which, IMHO, isn't designed for our wfp use.
Filling at an LPG gas station is simple and cheaper than buying bottled gas.