On a cruiser tri or quad sail setup could be viable in low winds if crew is available.
My difficulty with this set up is, when single handing, it is lots of work for very moderate gain. After all l am cruising.
On my Adams 28 l have a reacher with 6.3m foot which l could run inside or outside. If l run it inside, l attach the tack to the welded shackle on the plate next to the forestay and tack it like a huge genoa. It is impossible to do this with the cutter stay attached. If l run it outside l attach the tack to the arch on the bowsprit with a snap shackle, outside everything. In the first instance l can tack normally while in the second l must tack the big sail outside the forestay and this makes it too difficult to handle three sails at once, single handed. One needs an extra long sheet for this to boot and must be very careful with the helm so it is impossible to use the auto-tack function on the auto pilot which is perfect when only tacking with a single jib.
My jib is a 120% furler genoa, which is difficult to tack with the cutter stay attached and is better be furled half way to pass the cutter stay and then let out again. Hence the need for crew. (guess, l could fully furl it , tack the rest and unfurl it again)
The staysail is self tacking without a track.
If there was a crew of two or more it would be a viable, though laborious option.
Last time l tried a four sail set up we were sailing back from Port Stevens with one crew in a near zephyr. Speed increased only 0.8 knots with all that effort. Well, racing is another world!
Running is a different story, if the need arises l am able to use a tri-setup. Genoa poled out wward the big reacher balanced on the lward side. If needed l scandalise the main or drop it. If l keep it up l always use a preventer, twin- rigged.
Or just bend the kite, instead.