Arguably this isn't a huge issue, but I'd be surprised if I'm the only one.
The number one in SCP, at least at small sizes, looks identical to the lower-case 'L' from almost any other code font. Consider someone is just glancing at your code, unfamiliar with the font... Confusing. I think it's a valid concern, especially given this font wants to be 'perfect'.

My suggestion is that the 1's 'hat' would be tilted 45° and extended long enough that it's easily and intuitively recognizable at any font size and render style.