I use Rekordbox as my home library. I am also a Lexicon user. Recently I discovered that DJay will read the Hotcue data from Serato.
The steps are
Open Lexicon, Import Rekordbox 6 Library, Sync to Serato, then sync to Itunes
After syncing to Itunes, open Itunes and sync your iOS device.
Your DJay app will now read your playlists and Hotcues as they were on Rekordbox.
Hope this helps the Windows users who are not able to use DCU.