I respect the innovation and all, but I can give you a little idea on how much they will cost you.
If you have a boat with that in the next five years you will get KILLED on resale. This is not a barb on the product's quality just reality in the market place here in the US. Anyone has a Merc dealer within a stones throw.
Volvo's are getting more and more popular on cruisers and all but look around this forum or the classified here and look how many Apache, Fountain, Skater, Sabers and Cigarettes have Volvo's.
There are a bunch of stuff for sale with exotic drives that look great on paper and all, but when it blows up in east-bumpf&^%k USA everyone knows you'll be towed for two days.
It might be the greatest product but they are missing the things that I need. Great acceptance from the public (for resale) from the dealers (for service) and availability (for resale and service) until then I will let the more adventurous and wealthy take the hit on time lost, expense and depreciation. Sorta like diesels for an Outerlimits.