I'm sorry I can't help out much, but the thought of honking your horn first to get the bike started gave me a chuckle. I've got an 11 as well and am dreading the first electrical issue. These aren't like the old days.
You might trouble shoot it by taking apart the left handlebar pod and disconnect the horn switch and see if that does anything to the starting.
2015 Triumph Tiger 800 XCx
2009 Harley Road Glide
2006 Buell Ulysses