No, only the fake double tap that you get if you enable the LPM screen (the one where the screen shows the clock when you take it out of your pocket, where you can then double-tap to ‘fully’ wake the phone). Edit: this.
I am, in fact, using it as a 7 inch tablet now. Hopefully true Jolla x Reeder tablets will be on the menu in the future - the good thing is that they wouldn’t require any work on telephony like VoLTE or 5G, they ‘just’ need a hardware adaptation.