A little bit of weight-savings from the tubeless conversion, but the biggest difference I found is the increase in suppleness (at the same psi) and less rolling resistance or effort to move. So overall I'm very happy with the switch to tubeless.

As far as weights:
- 147g tube (28-38C)
+ 5g tubeless valve stem (48mm)
+ 90g OS endurance (90mL)

I didn't weigh the factory rim strap vs. WTB tape, I'll call it a wash. I also installed a CG-R "cobble gobbler" 350 mm carbon seat post... but, tire pressure and tubeless made a bigger difference to comfort. I would put in order: tire pressure > tubeless > carbon seat post

Exceptions might be sprung seat post like the Redshift, Kinekt or Canyon VCLS 2.0.