Mounted propane BBQ

I would like to know the downside of mounting a BBQ on the side of an RV. I have heard talk about the heat causing problems on the side of the RV, but see a lot of campers using this configuration. I am interested in hearing only from those who actually use or have used a BBQ this way. I am not interested in replies with opinions. Thank you. \

Heat and grease all over the side of the RV.

My new RV had one. Cooked one time on it and got the tools out and removed it from the RV.

And BTW:

I actually had a side mount BBQ which qualified me, 'per your instructions', to be able to reply, but it STILL is just my opinion.