The point of Quintuple is compatibility with the IBM Quantum Experience, so that you can noodle around on your own system before trying your program on the real thing. Is there an easily available quantum device on which I can run a Liquid program?
There are no available quantum devices and there won't be any for the next few years for sure.
Liquid is meant for simulations. Sure, you can run the same operations on the currently available research hardware (which is definitely not going to do anything useful, because the hardware "decoheres" way too fast).
And the notation that you use does not matter much - any program that you will try to run today would be so short and the hardware so experimental, that writing the control sequences by hand for the specific hardware would be the easiest part of the exercise.
