I'm just guessing, but I should think it would be the same.
What I can tell you for sure is that spelt will not make your blood sugar spike so readily as ordinary wholemeal wheat.
And I mean this: so long as you don't eat too much in one go, then not only will your blood sugar not spike upwards initially, but it will tend not to subsequently spike DOWNWARDS either.
Accordingly, if you eat it steadily throughout the day, then it will have a moderating effect on your blood sugar, and you will be less likely to be caught out by a hypo than if you were eating ordinary wholemeal wheat.
The effect, I have found, is the same as eating rye bread. (That's any kind of 100% rye bread; and I eat around 220g per day, though none after 4pm - or my blood sugar would rise in the evening and overnight.) But spelt is an awful lot more expensive than rye.