We've carried ours on the front of our tow vehicle with no problem for 15 years+.
First with a Safari Minivan, then a GMC Sierra 1500
pickup, and now on a
Sierra 2500HD pickup. It has always worked well for us.
On the present vehicle, I cut down the height of the bike rack a little because the front mounted hitch on the truck was higher than on our last truck and the bikes sat up higher than I liked.
Now I can just see the seats/ bars barely above the line of the hood. Just enough to know that the bikes are still there!
Our Airstream came (used) with a rear frame mounted hitch, however I removed it as I was a bit concerned about the effect of the bikes bouncing at the back of the trailer - also when up in front, if they should fall off, it will be me that runs over them not some other poor bloke!