Seems to work for me. The biggest problem I have seen is that I've been plagued with instances where the scanner would stop and just spit out "digital" noise for several seconds, either randomly or at the end of a transmission. I had this problem with the both the DTRS and El Paso County systems. I installed the new DSP last night, and on the hour ride home from work this morning, monitoring both DTRS and El Paso County, I didn't have a single occurrence of that problem.
I'll leave one scanner with 1.4 and another with 1.3 and compare them. So far, however, the 1.3 scanner has been spitting out the noise occasionally. That is the same scanner as on my feed, if anyone wants to monitor it and listen for it.