Once upon a time, my GT-R got a split clutch hose (standard rubber). I had to drive the car home with no clutch, only had one use of it to move the car from stand still. Luckily I managed to get a couple of green lights before getting onto the motorway.
You don't need a clutch to drive the car, but if you stop, you'll have to move it on the starter or something.
Don't need a tacho to rev match, can do it from sound and 'feel'. The single synchro gearbox in my R31 is quite slow, but I can drive it smoothly. I can drive my GT-R by lazy rev matching and it's quite smooth (super heavy clutch).
Don't shift quickly, keep the revs up and practice. You'll get the hang of it, then can apply it to your new box .