The thick blue lines is the aqua therm, fibre pipe, and the green stuff is wefatherm fibre. Much the same though really. Ok in its place I guess, and I think there's a good case for its use, but I'm just not a big fan of the stuff really. My thoughts on using it:
It's not terribly rigid at temperature (loads of clips and unistrut),
can't offer fittings etc up before you fuse a joint so it's a bit different on measuring/checking etc, burning on a fitting can be a bit awkward in tight/awkward places (especially 90mm +),
persistently having to put a level on everything and square it up until fittings are cool,
Always seem to be holding a fitting waiting for it to cool,
pipe swarf seems to get everywhere,
the paddle burns like mad if you catch yourself on it.
but then...
it's light, pretty versatile (weld in saddles etc), surprisingly tough/resilient, can be quick, cool wall means it's pretty hard burn yourself of a hot pipe, not too bad to cut, and is pretty resistant to corrosion.
Just been using loads of carbon steel press fit lately though.