Is there any need to change over from your Triumph?? Not that a Ryker, or better yet, a Spyder, wouldn't be a bucket load of fun, since both are a blast to ride, but I'm a little intrigued as to what's driving the swap for you??
Admittedly, I was already riding a Spyder part time before my first bout of '
crack his chest open' surgery (mine was due to physical damage tho) and having the 3 wheels did make it a little easier to convince all the medics that getting back out with my knees in the breeze ASAP after the surgery would do wonders for my recovery;
and the power steering on my 2013 RT has proven to be a great help in targeting the recovery of my traumatised chest & sternum area; but even before any of that, getting back to riding on either 2 or 3 wheels ASAP after surgery has always been one of the best 'aids to recovery' that I've ever used, and most of my Doctors have (eventually) been fine with it, if not actually impressed with its benefits, especially once I've pointed out that I'm not out there hooning &/or racing bikes any more (well, not any more than I used to, anyway!!

)
So is there any reason for searching out an alternative to 2-wheel riding??