Yes, there is a big difference between scanner and comm receiver (freq. range, modes, receiver functions, etc.).
And I consider R8600 to be the best comm receiver made today. I might replace my R8500 some day. The same is with the handheld version - R30 ... Very good comm receiver. But without DMR, which shall not be supported by Icom, you have to carry additional receiver/scanner with you, which is not a best solution.
Regarding DV-10, it may work well as a handheld receiver on the supplied antenna, however don't connect it to an external high gain antenna or the receiver will go crazy. There is a page with receiver/scanner reviews in Czech language, which can be easily read using google translate, if you are interested - have a look here:
There are many othere honest rceiver/scanner reviews.