Yes it is.
Manual wheel stairs, no driver required and cost about 20K per set.
One cabin crew in the rear and one in the front.
One extra staff member on the ground and good ground marking is essential.
APU inlet on the other side so no worse than walking out to a TP on the ramp.
Airstair does not impede water or honey cart operation.
It is not a problem and is very efficent.
Like I said it is the normal operation for A320 and B737 in NZ with both Jetstar and Air NZ.