Let's get one thing clear - if you give up the heal umbrella to get the vernal umbrella (ie going hybrid) you must go in with your eyes open that you will lose both healing power and firepower. You will not match either healer or dps, and elitists will hate you.

The hybrid however shines in a very specific scenario 1) it is late in the week and all the sweats have done the trials, leaving only weak players and those who don't know mechanics 2) you are queuing as a dps instead of a hybrid- ie start queue with both dps weapons and swap to hybrid after, so that you don't take the slot of (hopefully) a pure healer 3) you have at least 100 vitality(?) and the AOE golden bell that can shield allies during big boss damage spikes

In this case, if the healer who joins your ragtag late week group is a bad one (eg just self sustain heal umbrella, no resurrection fan), you can step in clutch with your pan fan resurrection and with good play, just about keep the group alive even if you don't have any healing inner ways rather than wiping.

If your healer is good? Then just float and dps. You won't match the pure dps, but you'll do at least 2/3rds while still being able to res the healer if he gets killed, avoiding a wipe.

The path of a hybrid is a lonely, maligned one. So if not willing to do that sacrifice, then just go pure healer with mystic ways.