I'm sure the Scala is a fine piece of equipment but it is pricey. I 'am trying the cheap route right now with a piece of what I usually call chinese junk. It is a BT intercom headset from gearbest.
https://www.gearbest.com/bt-intercom-headset-_gear/ I have only tried it at home so far but works good. Today will be the first on the road test. I think I paid 39 but it is on sale right now for 29 and for the low cost I figured it was worth a try.