HI,
I swapped from a set of mavics tyre & tube combo to a set of ultegras & tubeless Hutchinsion Fusion 3’s about 4 months ago,
I tried the Hutchinson Atoms as well but they come up really narrow when inflated so swapped back to the Fusions.
From my limited experience
1.the weight is about the same if you run harder wearing tyres/tubes for commuting/training purposes
2.they are heavier than light race slicks and race tubes.
3.they were a nightmare to get onto the rims, may just be this combination tho, one sealed first time, the other sealed after an hour
you do not need a lot of sealant either.
4.I haven’t had a single puncture in 4 months and i ride them rain or shine for comuting and training, everyday, approx 100-150 miles a week.
5.i run them at about 90psi so they are a little more comfy than my previous higher psi road combo and they do seem to roll very well.
Overall pretty pleased with them, the tubeless tyres on offer are pretty limited in choice but for everyday duties they seem to do the job well and anything that stops me changing a tyre my commute is very welcome.