yes, Arvika(also known as Popuprails) has been recommended on RV forums for years, especially their tongue mounted rack for TT's.
there's also another company in Quebec, Support-Rack http://www.support-rack.com/us/shop/
, that makes the similar types of bike mounts:
big problem is they are very expensive and hard to find in the U.S.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC