Century Wide angle lens ... must it be the bayonet?

I have the Sony vx1000 and I want to get the Century optics .65 wide angle lens and they claim that they have the bayonet version for the vx1000 but they aslo have 58mm screw-on for other cameras. My question is whether I can just get the screw on type, get a step ring and attach it without having to get the bayonet version?

This way I can use filters, etc ...

Thanks in advance!

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