All servos are basically analogue.
The only real difference is that digitals servos are programmable regarding failsafes etc.
With the modern tx and rx's you don't really need digitals anymore IMHO
I run a ko pro 2173 fet servo in my rallycrosser which is analogue.
I also run a dx3r and a lipo with no regulator and at 5.5ms and i have never had issues.
So the answer to your question is yes no problem mate.
Just my thoughts.
Jamie.