Clyde is fully flighted and makes use of it most every day. When he found us (he just turned up in our yard one day and we never found his former family), he couldn't fly very well and had trouble landing and we think he was clipped before and had grown out just enough to escape. Now that he's had some practice, he's really good at flying and can go where he wants and land perfectly. However, he only wants to go to Hubby or me or back to his cage. He doesn't explore or buzz around the house. He never goes in the kitchen or bedroom and really prefers to be with us except when he wants a snack or decides it's bedtime, and then he goes right to his cage. It hasn't seemed to alter his attitude or personality, but then he was already flighted when he arrived, so we wouldn't know how he acts when he's clipped.
We've got two dogs and they understand he belongs here and don't bother him, but I wouldn't want to clip him so that if he did take off, he could only glide or go to the floor. That might be too much temptation for the dogs, and if they got too curious, they could hurt him even if they didn't mean to. Or we could step on him if we didn't see him land. He squawks his little feathered head off when he takes off to fly, so nobody can miss the fact (he's kind of a showoff!

). He's never out unsupervised, anyway, so we know where he is all the time.
You just have to be vigilant about doors and keeping an eye on him, and put him back in his cage and shut the door if you have to go into another part of the house and can't take him with you. If you're cooking, I'd put him in his cage, too. Clyde has no interest in the kitchen and when Hubby's cooking, if Clyde's out, he's with me, just in case he should develop an interest in the kitchen, but we've had him almost seven months now and he only goes in the kitchen if he's on my shoulder and I'm in there getting a cup of coffee.