Semcycle question

Let’s pretend I buy a Semcycle XL with 2 extra wheels (total cost $350). Would
this mean I’d get a 20" uni, a double-wheeled uni, and a 3-wheeled giraffe? In
other words, are the additional wheels relatively easy to take on/off (able to
do at home in under 20 min.)? If so, that’s quite a deal! Thanks!

Jake Cooper