A person determined to only use tables might want to consider the following scenario, and consult those tables to see whether there's apt to be an issue.
You go on a dive charter boat excursion in the Caribbean; maybe you're on a cruise, maybe not, either way, it's a 2 tank trip, with 80 cf AL tanks, maybe an hour surface interval. First dive may hit 75 feet max. depth early on but a shallower average depth (maybe 40 feet); 2'nd dive will be shallower, maybe 50 feet max., again with a shallower average depth (maybe 35 feet). The dive op. wants everyone to avoid NDLs, but wants to show everyone a good time.
Your tables will assume square profile diving and give you much shorter dive times than the other divers' computers. Part way through dive #2, the tables claim you need to go up.
Everybody else's computer says there's plenty of NDL time left.
Soooooo, what'cha gonna do? Let the dive guide know, and ascend alone? (On a drift dive, the boat may be following). Do you expect the rest to end their dives early to accommodate you? People pay a lot of money for relatively little bottom; if your buddy feels obliged to come up with you (many would not), you could be costing him bottom time. Even 10 minutes is a significant portion.
I've seen some rather spirited condemnation on the forum towards the not uncommon practice of sending divers up solo, such as when low on gas (e.g.: 500 PSI). I'd think using a NDL calculation device that's way more limiting than the rest of the group could cause a similar scenario.
Richard.