Dual 5G SIMs worth it?

I am a CCer and I have a dual sim router, a RUTX50, which has the ability to use a second mobile ISP as a back up. Do any of you pay for two services? And is it worth it? I currently have Vodafone which is great when i find a spot that gets 5G, but 4G just doesnt cut it for my day job which uses a lot of bandwidth.