Specialized don't make tubeless tyres AFAIK but tubeless ready , you need to use sealant, the beads are tubeless but the sidewalls aren't (and therfore not heavy) as the sealant seals the sidewalls, the Sworks ones are too thin for longterm use at low pressures (20>25psi) and start to degrade after about 6 months (mine were replaced FOC with non sworks ones) . I've been running Spesh GC's since Jan this year and have found them to be very good , only had 1 thorn puncture and found this out when cleaning the bike a few days later (I could see the thorn not due to pressure loss). You do have to top up the sealant every six months or so but I certainly won't be going back to tubes. As an all round all year tyre I'm happy with them and will be buying another set for the Orange, oh and the RR is very low.
Retro :1991 Muddy Fox Alu Pro owned from new n retired due to crack
95 Orange E3 , gone but not forgotten .
97 Kona Lava Dome now with disc mount and painted pale pastel green.
Modern :Cotic Soul frame with mismatch componentsbut it's brill
Stroppy old git