I used to do it quite often in Diawa Boat Braid to get the benefits of solid line but the ease of spliced end loops. No problems as far as strength.
I would usually just add 10' or so for the loop. Inevitably, i would get reefed and lose 30'. Then have to go through the process again. I use all hollow now. I can swap topshots instead of spools. Just got my reels ready for Sri Lanka yesterday by removing 100 yards off each spool and bumping up the line #. Sorry....off topic.