I have a #1 in .45-70 and it wears a Sightron SII 4X32 compact. It replaced a Leupold 2.5X20 compact scope. Both of these scopes have very generous eye relief, but even so, required extension rings to optimize the view because there is only so much you can move a compact scope back and forth. I had another #1 (RSI) that wore a 1.75X5X20 Burris Fullfield - also with extension rings and it worked out really nicely as well.
I like a petite scope on the smaller/shorter #1s, and a low/med power fixed scope is more than adequate for my uses with the .45-70 cartridge. Bigger, longer scopes may give you more latitude on eye relief adjustment with the standard rings but I really think they offset the balance and beauty of a #1, unless it is a #1 varmint model or the like.
Both the Sightron and the Leupold have very good FOV, optics, and durability. Both have excellent warantees.
added: BTW there is absolutely nothing wrong with the Leupold, it's a great scope. I have two of the 2.5X20s. I just like the Sightron 4X32 better and I do play "musical chairs" with scopes & guns.