Pricing
will be critical. The right price and I need dozens. The wrong price and I need none. Modeling a district with most signals removed these will look awesome in rusty/dusty/unkempt condition.
Same with backsavers, hoping for the backsaver yellow bar only, mounting it to a regular slide switch with a 00-80 screw or similar. With next layout planned for very near eye level I'm more concerned about a general sense of 'visually right' but still durable enough for everyday use by 1:1 scale fat clumsy fingers...