Digital BW, The Print

I should be getting a 2nd new replacement 1280 any day now. I have 
been previously using the original VM inkset and decided with this 
one to try the UT inks. My question is, would it be a good idea just 
to use the UT in the 1280 right out of the box? Or should the Epson 
ink be run through the printer a little bit then switched? I read a 
couple posts about the Eboni Black clogging up sometimes when it gets 
mixed with the Epson inks. Thanks for any help.

matt