I have a kegerator that serves as both my kegerator and my method of temp-controlling my fermentations. I'm going to be brewing a lager in the next couple of weeks, and I was wondering if it would be possible to lager at 38° rather than 34° so that I can also have a keg that I'm actively drinking tapped at the same time so I don't have my kegerator tied up for the next 2-3 months. Everything I've read says I need to lager at 34° and serve at 38°; I'm just wondering what the implications would be of lagering at 38°, serving at 34°, splitting the difference at 36°, etc.
What would you recommend? Do I need to just wait until the lagering is done, drink that, and then proceed with the next brew, or is there some way I can have both going at the same time?