I will say that the Phantom is a large gun and I'm not sure it would be my 1st choice for carry. But it's an amazing gun and extremely accurate.
The Phantom, like the P10F or the P09 hoovers around 30oz.
That weight is not too bad for a full size handgun.
With a good holster it can be an all day carry.
Agreed. I was not commenting on the weight of the gun (though weight is considerably more with 18+1 rounds loaded), more the physical size. Certainly its size would make it more of a challenge to conceal than other options, but I'm not sure how the OP plans to use the Phantom. Open carry wouldn't be a problem.
Yes, I don't know either how the OP intent to work with that one, but we have been so spoiled with polymer guns.
Only up to 20 years ago, full size steel guns were the norm for carry, and we didn't hear too many cops, or others, complaining too much about the weight, even so they probably wished for something lighter