The problem with lever machines in residential is how high the levers are, they block cabinet doors. In my installation I tempered that with a mug shelf, since it is easy to reach around the levers to get a mug. The height of a SJ is also a problem, but most don't use the big SJ hopper (how much coffee would you be drinking daily to keep that fresh?).
The downside to all this, is tucking a commercial 2 group under a counter hardly shows off the machine. My "Antonella" is a boxy 80's looking model with a cheesy black metal flake finish, so I don't mind, if I had a great looking machine I wouldn't want to tuck it.