What makes the lock ugly to me:
1. It's physically ugly --- a small wart like apendage that does not need to be there and can not easily be removed
2. It violates the kiss priciple by the addition of extra and needless parts to a guns internal workings that could fail or otherwise casuse problems --- yes that's right the Keep it Super Simple idea --- in general the fewer the parts the better (just ask and glock armorer I think it's a mantra they chant in their training) --- if I am carrying a wheel gun it's typically because I'm camping, hiking, traveling or otherwise doing someting that might expose the weapon to greater amounts of dirt or less than ideal care and maintance and I still want the thing to work despite all of that.
3. It is not needed, political BS and in my opinion probibly dangerous --- I think of the peace of mind the lowest common denominator of moron gets from an intregral gun lock as being akin to buying a gun some ammo, shooting a few maybe and then chucking the loaded thing in a bed side drawr --- it's a very false sense of secuty --- gusn still need to be in decent safes if they are in the home and there is any, any chance of unauthorized acess, thining the wart lock will stop a bad guy or a determined kid bent on exploring or worse is pure folly --- I sure know I could ahve defeated that thing when I was 8 or 10 if it had existed and the motivation was there.
If you want to make a lot of bucks as a gunsmith tool up to make S+W lock work with out the lock bits and sell and oversized release button to cover the ugly hole up.