If I still did thrusters (I don't, I find them an odd exercise, actually), I would put them in the context of a workout where I could wear my OL shoes.
The extra ankle ROM afforded by the OL shoes goes a long way in preventing low back "caving" at the bottom of a thruster. Also, the lack of full depth squatting on thrusters puts extra wear and tear on the knees.
Thrusters done with DBs allow for a much more upright torso and are what I would prefer doing.
Ack, since this isn't a discussion about thrusters, I'll shut up now.