How to measure/show MIPI-DSI 4 lane signals on DSO/oscilloscope?
I routinely look at MIPI signals on my scope.  Understanding your MIPI signals speed is key to knowing what type of scope you need. For my current application my scope is about 3.5Ghz @ 40Giga-samples per second.  I also use a differential scope probe with similar bandwidth.  So yes you can look at them on your scope but you need one with appropriate bandwidth and sample rate.  

If you just google or go to the sites of some of the majors like Lecroy, HP, or Tek you will see they have whole application suites on their scopes for measuring, characterizing, and even decoding MIPI signals (options of course).  You might also consider a serial data analysis package for the scope if you are interested in seeing eyes etc.

You can always rent gear if you don't have one.  If it's a home project and you have a 100Mhz scope well...