The Backset bow will feel like it has a slightly heavier "lump" in the first part of the draw, it then smoothes out quite nicely as you come up to full draw.
The string follow bow will be almost soft in the first several inches of the draw, and will be 2-3# per inch just like the backset bow out at full draw as well.
Neither one will feel, if properly made, any different as you approach full draw.
Your muscles are strongest when they are contracted, not extended, so the extra weight, at the front of the draw, in a backset bow will not be perceived as smooth as the softer front few inches of draw with a string follow.