Having had 2 motorhomes before, we always opted for the portable. I like my trees / shade, and they would've got in the way of getting a signal. I've run as much as 60-70' of coax before with the portables, so 1 vote for portable. Of course, sounds like GOTTOYS has got it covered either way. That's an option.
Only reason I could ever think of having one on the roof, would be for in motion tv watching, by those in the back, if not obstructed by a slide wall. We never had TV in a vehicle growing up, so my kids don't either. Just us.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.