Probably not a bad idea. Remember that gloves were invented to protect the puncher's hands (to prolong boxing matches), not to protect the other guy's/gal's head.
It sounds like you might be either off on your wrist alignment, or you are landing too much with the pinky and ring metacarpals (knuckles).
When you are throwing your left hook, is it a circular type of movement, or more of an angled straight movement? Keep in mind that the horizontal/palm down hook is a close range, very tight sharp angular punch. The aim should be to hit through the center of gravity of the target (be it bag or opponent's head/body), and not to "rip"/"ice pick" through/off it. You can kind of think of it as a very short, angled power jab, but with much more rotation (much of the power comes from the rotational weight shift when hooking, while stepping can also contribute).
The vertical/thumb up hook on the other hand is a more effective long range type of hook that actually follows a circular arch to and through the target. The vertical fist orientation allows better alignment of the knuckles on the target at distance (flexing the wrist aids in this). While this punch can still hit through the target's center of gravity it is generally more often used to "rip"/"ice pick" when thrown to the body, or to attempt to spin the head when directed at the chin.
If you are in tight (to the bag or opponent), then just pick whichever style of hook you feel works better for you (or, once you get more experienced, which is the correct style for the opening that you are trying to exploit). When you are at a distance though, I'd stick with either a jab, or the vertical fist/circular hook.