I have some red metal 5’s that are a good few years old and taken some abuse over plenty of miles. they’d been in the garage for a while till I bought my sanderson frame last week. I dug the red metals out to give them a once over, stripped both hubs expecting to find siezed bearings, the grease in the front hub was so clean it was still white, the NDS of the rear was the same, the freehub was a little mucky. I was amazed at how well sealed they are, all bearings were still running very smooth.
I spent last night with the hair dryer taking the stickers off the rims, now they’re all ready to go on the new build!
If you dont mind the weight, I’d say go for them, I assume the 10’s have the same hubs as the 5’s (I think the 5’s were the lowest spec when I got them). And they’re not that heavy compared to other budget offerings for the same price.