Rough estimated weights
- Moots Routt RSL Frameset = 1,400g (54cm) according to this CyclingTips article
- Parlee Chebacco XD Frame weight = 870 - 980g per Parlee website for S - XL. So assume ~900g for equivalent size to the 54cm Routt
Gives you a frame weight penalty ~500g / 1.1lbs
The CyclingTips Parlee Chebacco article lists the complete bike as tested at 7.8kg, so if we go with 0.9kg (900g) for the frame, then everything else besides the frame = 6.8kg. So the frame makes up only 11.5% of the total bike weight. So your choices for everything else will probably influence the overall bike weight as much or more than just the 0.5kg difference in frame weight