As far as comfort is concern I suspect the BMW is more comfortable, the H2 for one does not have a rear seat for passenger or luggage.
As for ordering, there were only two window's with which to order and unfortunately missed them both. Not to say another window sill open up somewhere down the road, but it's not likely.
You can find one for sale by owner I'm sure via CycleTrader, Craigslist, Ebay, etc.
2015 BMW S1000R
2015 Ninja H2 (sold)
2015 C14 - Replaced 2013 Ducati Multistrada GT
2014 ZX-6R (track bike) Replaced 2011 ZX-10R
2005 KDX 200