I don't know how the Inovelli switch works, but if it fires a central scene event/number for a single press up, then I guess so. 
(I assume it does since it has the option to disable the internal relay, effectively just making it a hardwired scene/button device. If it's the switch itself turning the non-smart garage light on due to the traditional action of powering the load leg of the switch, same as flipping a "dumb" switch then, of course, it's not really a scene.) Basically, central scenes are events that devices can send to the hub and have the hub react however it wants to. In Hubitat, they are exposed as button events, which seems logical to me since that's what most of these devices themselves are.
It sounds like you might be thinking of something else, though, too: direct association. This could, for example, let you turn on switch 2 when switch 1 is turned on via direct Z-Wave communication between the switches, no hub involvement necessary. This may be a bit faster and saves some Z-Wave traffic, but it's much more limited in what you can do. Inovelli switches do support this (and Hubitat supports setting this up), which you can read a bit more about here: [RELEASE] Inovelli Device Drivers - #19 by ericm
(I honestly don't understand the differences "old" Z-Wave scenes vs. direct association since, coming from ST where the former wasn't really used and the latter was quite rare, I didn't use either. You'll definitely get the most flexibility from involving the hub, plus it lets you control non-Z-Wave devices too, but the few yet possibly important advantages mentioned above do remain.)
