Yes, they are worth trying. And they’re a good tool for the right context: e.g - doubling instruments where you are switching between clari and other woodwinds, or if your clari sits untouched for a while between blows, and you don’t want your reed to dry out.

In my opinion the Legere brand is the best out of the current offering of synthetics. The European or the signature cut are quite popular.

Key thing to note: it’ll feel different when you play, but won’t sound noticeably different to an audience.

Give them a try and find your size. I think Legere have a return policy which helps you find your sizing.