If you have no audible hiss with the Creek then I suppose it's a non-issue and sound quality should be your only concern.
If I said yes it would give you better fidelity people would be justified in saying I'm biased or have a vested interest, but you will find plenty of posts on the forum from people saying they prefer a SUT + mm phonostage to an mc phonostage. However, you will also find posts saying the exact opposite, so I suppose there's no real consensus. Who do you believe?
In the USA the only outlets are Britaudio and Needle Doctor. I'm pretty sure that Britaudio have MCLs in stock at the moment and they will take an order over the telephone.
http://www.britaudio.com/ordering.html
The other alternative is our own online shop
https://rothwellaudio.16.ekm.shop/mcl-120-mc-transformer-38-p.asp