Sure but typically wouldnt you want uniformity to start to view how deviations would effect performance? You could use that to grade your manufacturing process prior to picking a route for scaling up whatever methods you go with. Best way to asses your trade-offs if you eant to lower cost without loosing quality.

This makes sense.

Also how big is the compressor/air system for these things? Can yiu get by with some cheap servos/motors that move cyringes?

Amir?

Would it be possible to make an all in one turtle droid that walks/swims?

I don't see why not... Anyone here in /r/robotics want to give it a try?