I’m an every day FastRawViewer and PhotoLab user. I’ve posted my step by step workflow with FastRawViewer. The core of it is to cull your files before moving to PhotoLab and to move only your selects to a subfolder. If you search for FastRawViewer, I’ve posted quite a bit on how FRV obviates any real need for a DAM on the front end within PhotoLab.
Personally I most often shoot RAW and jpeg and configure FRV to show the jpeg as preferred preview as I usually get exposure right and it’s faster to check focus on full size jpegs. RAW also works fine, it’s just the time switching between images can be felt while with jpeg previews switching is near instantaneous. I developed the RAW + JPEG workflow as I also shoot Fuji sometimes and FRV does a very poor job with Fuji RAW.
There’s a separate functionality in a DAM besides ingesting and culling: managing a photographic portfolio. For a catalogue of finished/portfolio TIFF or jpeg images and an export tool for web and print, Aperture or an old copy of Lightroom 4 work well. Almost every photographer owns one or the other of these or they can be acquired very inexpensively. I recommend keeping finished images in a parallel folder structure with the same naming structure as your RAW images.
DxO PhotoLab is the superlative RAW processor. SmartLighting, ClearView, auto Horizon/auto Crop, Prime Noise Reduction (set low to 10 or 12) allow a photographer to create better masters much faster than any other RAW processor. With FastRawViewer and PhotoLab you have the core of the most efficient and high quality photo post-production workflow known to man.