I have done this! If I'm on a four day split, and since there are always two upper body workouts, I like to break up the leg workouts like this. Sometimes I add on a 10-20 minute core segment too. That way I get 2 leg (1st half STS leg, & next time 2nd half of that STS leg), and 2 core workouts in the week. My most favorite STS workouts to split this way are Meso 3 Plyo legs, especiallly when I haven't done them for a while. STS Plyo legs are challenging cardio/strength gems, and were the precursors to Cardio Leg Blast (CLB) which I love.