On offer here is a pretty tried method of down tempo and sludgy influenced hardcore from both bands. Three songs from Drainland that easily dominate the rest of their catalogue in many differing qualities; the recording is their best yet, Jamie's vocals are certainly at their peak in terms of low end and 'manliness' and all three tracks are just really well constructed, especially the opener, "Stairs".
Trenches contribution, a single track by the name of "Vaccine" is a longer number, pushing into the + 10 minute arena. Noticeably similar in style to that of the general Drainland feel; slow, sludgy and dark and with more of a modern hardcore feel in the recording style. Obviously this song progresses through a number of tempo changes and directions with it's length, and I haven't heard any other material of theirs, so I have no idea whether this is a typical Trenches track. I like it though.
Overall it's a pretty bare bones layout and presentation. Two colours dominate the presentation as you can see. Nothing more to it. Being the kind of nerd that I am I do find this a little boring, but judging by what I know about the bands, I'm kind of guessing that this is the aesthetic that they were going for.