Mixing speaker cables on bi-wired speakers


This is going to sound like a dumb question.  I have bi-wired speakers and I like the bass from XLO and transparency of Nordost, so I have Nordost on the top posts and XLO on the bottom post for good solid bass.  Has anyone ever mixed speaker cables as I have described?  Is this common or not recommended?  It would seem to me that the Nordost ribbon cable is fast and XLO (XLO Ultra) is slower in comparison, but I cant tell that by listening?  

FWIW, the speakers are EggelstonWorks Rosa

Thoughts?   
mudbone
As always, let your ears decide. Personally, I am very happy with Morrow SP7 on bass & Cullen on mids/high's on my Revel Ultima Studios.
I have a thread on this topic, I have different length and brand of speakers cables, on the bass $60 anticables, on high , clear day and homemade strand, the result is unlimited Dynamics, more air , exciting to listen, I am bless to get this result....it’s more than a year now I never touch those cables....
I've done this before, and there is no problem.
Some folks use different amps for the highs, mids, and lows.

Different cables makes less of a difference than using different amps to drive one pair of speakers.
Jayctoy, thanks for starting the thread. I had a feeling it has been asked, but I couldn’t find it last night. Thanks and thanks for all the responses.