I checked on my pixel 3 (beta 2) and I can active sim 2 (e-sim). But I'm not sure that anyone can use 2 sims in actual. (1 sim for calling and 1 sim for data connection it will be nice)
As I knew it will depend on carrier and country (ex : in VN e-sim only support for Iphone). So anyone's using DSDS please give us feed back about this ?