Breeze,
It really depends on how many night time movement events there were, if you don't have alarm set. It took a few weeks to trust it would wake me up, it did a few times, but wasn't a "situation". The young gas thief, I'd been inside home and system was already in van so wasn't an alarm, but my review after the gas went missing. The other funny thing about cams, most people don't want to look directly at them. I noticed that over at Walmart recently. People who know me, they know why I record video and they're not nervous about it at all. A couple friends are now planning on getting my help to set up their systems, one in home one in van.
During daytime, it also marks movement events, and to review it quickly cycles through those events and also has a click setting to adjust the speed of playback from slow-regular-fast speeds (edit: and has fast forward like in a vhs) so you can get to the timeframe you want to review most. You do have to watch intently and click stop then rewind like any other video. I can't really give a time spent reviewing, but it isn't very long. I'd say in beginning I'd spent ~ 5 to 7 mins max at end of day to review movements during the day. I don't do it every day if I don't see a reason to review. You get an awareness of the camp safety vs brewing troubles. But if a situation got shady, then I'd likely spend more time reviewing to decide how to deal with it best. You then need to capture clips then save those clips on connected PC HD using software's radio buttons. It isn't hard.
So you see, it really varies for time spent.
I did mount a VGA two DB15 switchbox, but only using it for a switch to turn off Lorex display to monitor (19" TV). The box has one input & two outputs (think switch between 2 printers) and S1 is Lorex cable to TV is on, S2 is TV off (as nothing connected). Then I can watch a DVD without removing or reconnecting cables. For the switchbox, I did have to buy a $2.00 DB15 Gender Bender, or I'd have had to buy a new correct gender'd cable.
Each cam comes with 60 ft cables, I did cut & splice the 4 twisted pairs & used tiny shrink tubing. It is easy if you know how to solder & splice wires.
If I had to buy again, I'd buy the Lorex. I'd already done several months of research comparing specs & reliability & sturdy build & ease of use IN my van. The SATA HD is also road worthy and is used in fleet vehicles as the road vibrations don't affect the HD like it would on a regular HD. It is also recording on all 4 sides while I'm driving, and that is good in case of problems on road. It's set for 24/7 record.
This is the Lorex Compact base unit, 8 cam 2 TB HD unit I purchased, but I went with 3 metal dome cams, 4th metal dome is also audio record.
8 Cam Lorex system This is a good page for full explanatory. My cost was different than that quoted there d/t my cam choices.
The other reason I went with Lorex is the stand alone, no WiFi needed system. Also, the dome camera housings are virtually indestructible unless the nefarious beings carries around a heavy mallet or ?? and by that time, they are already recorded and they know it.
Sorry this is long winded, there is no quick answer on tech and these points are not found in any product FAQ's for vans/RVs.