I will tell you our experience with a trike, our 5th wheel and traveling around the US. Both my wife and I have our motorcycle licenses,I'm the only one with a license to drive the truck and our 5th wheel. Last year we did about 15,000 miles going around the US. I drove the truck and she followed riding the trike. We used the trike to site see at all of our stops ending up with 27,000 on the trike for the year. We used a Gold Wing trike as our vehicle - the most reliable motorcycle there is. We did oil changes, replace a bad head lamp once and that was it. In fact in 110,000 miles we haven't had a major problem with the trike in 4 years. We sold it this year due to MY health issues or we'd still have it. We've switched to a Subaru as our tag along vehicle.
With heated seats, suits, rain gear, full coverage helmets we traveled in all weather and were comfortable and dry.