Heel strike is a definite issue with SWB bents, but now that you know about it, you can better avoid it.
I fell down (nothing severe) about 7-8 times in the first 10 miles riding my bent. After that, everything clicked, and I 'got it', and have been loving it ever since.
It took several hundred more miles to really get the hang of relaxing and learning to smooth out the twitchiness of the handling, but I race sportbikes and learning to deal with handling quirks is just part of the game. I can regularly do 50+ mph descents, and have so far maxed out at 64 mph (indicated).
Getting a velomobile next month to allow me to commute even in the winter, and I suspect that will have a bit of a learning curve, but probably less than the 2-wheeler.