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For some reason, homemade design's most common victims are scrollbars. For years, we've encountered non-standard scrollbars in our studies, and they almost always cause users to overlook some of their options...Some of the world's best interaction designers have refined the standard look-and-feel of GUI controls over 30 years, supported by thousands of user-testing hours...
If Jakob's Law is "users spend most of their time on other websites," then Jakob's Second Law is even more critical: "Users have several thousand times more experience with standard GUI controls than with any individual new design."
Users will most likely fail if you deviate from expectations on something as basic as the controls to operate a UI.
Food for thought - just because we CAN do something doesn't mean that we SHOULD.