I have a few "truly" lesbian (not BI or Pan-sexual) friends and workmates and they debate this topic back and forth every now and then.
One group are die hard will not use anything remotely phallic while the other group do not care if it had hair, balls and squirted semen so long as it was not attached to a guy.
Within the group that are anti-phallic about half refuse to even contemplate a strap on whilst the other half use non-phallic shaped strap ons.
Again within that anti-phallic group a small number even refuse to use any penetrative sex toys at all.
In the end I guess it comes down to personal choice.
I hope my input may have helped in some way.