I think a nose mount like the one for a 206 with a moving counterweight would work for the R44 as well.
There are a few new players in the gimbal market, some showing their new wares in a few weeks time, most are offering similar size gimbals to the cinelfex at perhaps afew kgs less weight as well as gimbals slightly larger.
The cutest and best compact gimbal for the nose of a R44 is the one made by Robinson themselves, for the R44 news!
Mickjoebill