Capture One has advanced so much that there's little reason (imho) to also use Lightroom; however, in landscape work I often stitch images and while C1 is fast and has that weird "panini" version, LR allows auto crop, or a warp of the stitched image, which cleans up jagged and missing edges. Also, I do appreciate the "stack/unstack" feature in LR for when I have multiple images and don't need to crowd my browser with them.