Hmmm, you'll always get differing opinions, often based on they type of driven hunting people have done, and their experience.
On a driven hunt, you could be shooting sub 10yds, or out to well in excess of 100yds, but most will be 15-50yds.
I have several sights I can use for driven, an Aimpoint H34L, Z6i 1-6x24, and a Z8i 1.7-13.3x42, and I often use a side by side double, without any sights, if I know the pegs will be really tight. I can only say from my own personal experience, unless you are very experienced, it's very easy to miss, even with a 1.7mag, unless you see, or hear the boar coming. If it suddenly runs across a ride, or close, you just won't get your gun up, acquire the target, and shoot.
I shot Turkey for the first time this season. Most of the shooting was 5-50yds, but on the last day, my peg was on one side of a valley, and I shot one boar at circa 150, and another at circa 200yds, one moving very slowly, and the other static. I would suggest speaking to the organiser, and asking what sort of terrain the hunt is on.
One suggestion, and it's what I've been doing lately, get an Aimpoint, or similar, on a QD mount, and have your scope on a QD mount, carry both, and swap according to the peg ! Cheap alternative
For boar at close range you will be disadvantaged with any more than 1 x magnification and over distances of more than 75 mt you will need more mag, a 1-6 or 1-8 illuminated reticle will be very suitable for just about anything you will encounter. If you can get some practice on a running boar range it will be very helpful and a good instructor will get you on target with the correct technique. Aim points are the best for short range but it sounds like you might be up in the mountains where you could be shooting over a wide range of distances so you need to have all options covered.
Typical peg from the area I shoot in Portugal. Very narrow track, just heard something move in the cover. Boar about 1.5m from me, launched so fast, first shot hit the rear quarter, second took it down. Chapuis 9.3x74 side by side. Geco 255gn.
First time in Turkey. Long walk to peg, which was a rock outcrop on the side of the valley. When I saw where I would be shooting, it was pretty daunting. I'm used to close shooting, and I think the closest shot would be circa 100m.
Blaser R8 9.3x62, Swarovski Z8i 1.7-13.3x42. Geco 255gn. Set at circa 4x mag. I tried higher at first, but couldn't hold it steady. I should say, no, I can't see the boar in the in the video either
I bought a S&B Exos 1-8x24 FD for my double. I was shooting driven fallow a week ago and had it set on 2x with range varying between 20 and 50 mtrs. I've got used to shooting with both eyes open up to 4x magnification. Being able to shoot with both eyes open is a must on driven hunts.