Is the 210 direct mount or hitch?
Not to piss on his chips but that looks more hassle than it's worth. He's hardly got the bucket a foot off the ground yet already at full boom height. You can barely load a track barrow with a normal quick hitch on a micro, so to load it with that he'd have to twist and tilt. Guessing it'll be a button divertor and aux on a foot pedal (?) so thats a lot of contortion, physical effort and concentration just to tip the bucket into the dumper. Then the same again to return to dig. Couple that with the much reduced breakout and I think I'd sooner get off and shovel.
Doobin, as someone who was as sceptical as you a few years ago and am now totally converted, all I can say is go and try one out on a similar sized machine to what you're thinking. The dig days the manufacturers are putting on these days are totally relaxed, no sales pressure, try one or two machines out, talk to owners - or do what myself and Shovelhands did and spend 90% of the day chatting and drinking tea
Until you try one out, go home, and spend some time thinking about how it might work in your business, I wouldn't be so keen to judge what other people have done with their own firms. Getting a tiltrotator has completely changed my business and I wish I'd of had the confidence to do it sooner. They don't work for everyone but from the kind of work you have posted on here, it certainly has the potential to make you some cash too. I had plenty of buckets and attachments - some of which I sold (and helped offset the price) and others I have yet to convert to S type but I really would recommenced the "S" system and proper tilty buckets. They are made lighter and of better quality material than standard buckets and they really compliment the tiltrotator and the new ways you'll find yourself working with it.
I'm in Horsham for the next 4 weeks. That's not too far from you I believe. Feel free to come give it a go - but remember I do have a JCB so be nice
(P.S. This is not a sponsor post and the very nice jacket Engcon sent me has absolutely nothing to do with me saying tiltrotators changed my life. Honest

)