YES........
The sprayers are connected to a stub on water valve. Just drill out end of stub and attach sprayer hose with clamp.
REASON.....they are connected that way so that water pressure is on sprayer ONLY when you are operating the toilet water valve. That way FULL LINE pressure is never on hose/spray head unless you have toilet valve open.
Just like the way kitchen sprayer is connected..no pressure unless faucet open.
The spray head can/will leak-----hose can blow off if under full line pressure so don't install with a 'T' in supply line.......potential flood