Effect of "suited blackjacks in only one suit pay 2-1"

One of my local casinos is running a promotion where suited blackjacks only in a specific suit pay 2-1. For example, last month it was hearts, and this month it's clubs.

From the Wizard's excellent rule variations page, we can see that "all suited blackjacks pay 2-1" cuts the house edge by 0.57%. Without thinking too hard, it seems like only paying for suited naturals in one suit would cut this effect in quarters, for a reduction in the house edge of approximately 0.14%.

Is it more complicated than that or have I got it? This game is not that great to begin with (6 decks, H17, no surrender, DAS allowed), so this is a nice little bonus. I hit it twice last night, with 1-unit bets >:o

If all 'Blackjacks' paid 2/1 then this would add 2.3% to the player edge.

Suited Blackjacks happen 1/4 of the time which gives 0.57%.

A particular suit happens a 1/4 of the time of suited so you are correct to divide by 4 to give 0.14%.

Quote: Switch

If all 'Blackjacks' paid 2/1 then this would add 2.3% to the player edge.

Suited Blackjacks happen 1/4 of the time which gives 0.57%.

A particular suit happens a 1/4 of the time of suited so you are correct to divide by 4 to give 0.14%.

Thanks Geoff!