I would not pay much more for LRR tires, nor buy them at the same price with a shorter treadwear warranty. If choosing tires for cost-efficiency, long treadwear is worth more than LRR. However, if they're competitive in treadwear rating and price I'd definitely choose LRR.
What would be more useful is to show the coefficient of RR. I believe each manufacturer knows this number for their tires. Since it is a sliding scale and not binary, RR coeff would help guide tire selection.