camshaft choice

Hello is there any problems with fitting a 1.8 carb camshaft to a 1.5 carb engine, looking at them both the 1.8 cam seems to have more pointy lobes lol sorry for being very untechnical.

If it were more pointy, it would be a milder cam (shorter duration).

im just asking if anyone has done this and if so what effect does it have on a standard state of tune engine, i dont want to do it for performance just that i cannot find a 1.5 carb camshaft anywere but i do have to hand a 1.8 carb camshaft.