I have a black synthetic 870 Express that came with the Law Enforcement fore-end and it is a bit of a reach for me. It's impossible for my 5' wife.
The selling point for it is 2 fold if you want a dedicated tactical stock. First, it allows for a sidesaddle to produce slightly ahead of the receiver and, second, you can load the magazine with it racked back. The fore-end doesn't over lap the loading port.
The downside is as you noticed. You have to reach out pretty well to get to the forend. The sporter fore-end comes back a full 2" nearer to the shooter,
You raise an interesting point. I even called Remington to order a 13" Youth stock this morning, only to learn it is closed for the weekend. Perhaps I don't so much need that short butt stock as much as the longer forend. I think I will just get the forend wrench (it can be done with needle nose pliers but I understand it is much easier to properly center the forend with a wrench). First I think I will call a gunsmith and see if there is a minimum, as I could use a mid barrel bead for trap and the two are ez jobs for a smith. I would rather give the $25 to a smith than clutter my garage with another one time use tool