'' Okay let me ask my digital question in another way ''........

Thanks sns much appreciated. This is why I am doing my home work before buying anything. The MUTEC clock is a XCXO oscillator which if we a are talking about the same thing is different. There is a lot in adding a clock as they must match. I hope things work out for you and thank you.  

Just out of curiosity where did you find out the Esoteric clock input can take a square wave the manual says 0.5 to 1.0 Vrms sine wave. 

Mutec you're looking at has OXCO clock, oven controlled oscillator, this is superior to TXCO in my switch, My dac runs OXCO clock for usb input. Widely varied opinions on clocks leads me to suspect there can be possible overuse of clocks in individual systems. Result is an excess of image, sound stage precision, in my case, loss of spaciousness, airiness. In real life, individual performers or images blend into one another. Image quality of my system sans switch/clock replicates this, With switch/clock in system, its like individual performers in segregated anechoic sound booths .
YMMV

Broadly speaking, a square wave output tends to be more stable. It's inflection points are more clearly defined.  With a sine wave the clock often cannot always  pick the exact same inflection points.  However, as usual 'it depends'. So you need more research.

I have just bot a great square wave cybershaft based clock that outputs to all 4 items in my digital system. The result is staggering, so don't give upon this search.  It was from afterdark and outputs both word clock to my dCS NB and 10M to the other components. Prices way more real world than mutec.

I would suggest you post your query on on the audiophilestyle forum....there are many, many pages that refer and qualified users who are extremely helpful.  Another useful resource is the Hong Kong afterdark site.  Confusing but lots of info.

By the way, I had just about decided to stop posting here as there are so many flatearthers on this site who are very rude about subjects they have no clue about...and then along comes your question!

Best wishes with your search.

Garebear,  go to the "What's Best In Audio" site, where there is an Esoteric owners forum and also a digital forum with clock discussions among guys who spend a lot of money on their systems.  You will find your answers there.