Michelemarie. There is one thing I stress to everyone I talk to about food. I even state it in nearly all of my recipes in my cookbooks. That is, the things you will learn from me, and from eveyone else on this site, or in any cookbook, or cooking school is simply a base of information.
I learned early in my adult career (electrical engineering technology), that the training you recieve, whether from the military schools, or at university level classes simply prepares you to go into the real world with a base of knowledge that will help you solve the various problems and tasks that lay before you. And that goes for cooking as well.
Like yourself, I have succesfully barbecued and roasted meats that people told me to braise. And there is no disrespect in your not following the advise given. To the contrary, it shows you have the courage to try new and different techniques. That is the hallmark of my cooking. I refuse to take anything as gospel. I try different things with every meal. I log the techniques that work, and discard those that don't. And remember, that not every piece of meat is the same. This time your roast came out great. Next time, using the same method, it may not. It depends on the quality of the meat, its age, marbling, etc.
I have found things that work every time, and found things that work some of the time. If you do a bit of research, you will find that the cross rib roast, also called an English roast can be roasted, grilled, and barbecued, if it is of sufficient quality. Also, tender for one person may be too tough for another. My wife is proof of that. Because of false teeth, she requires exeptionally tender meat and veggies. And to get tha degree of tenderness she needs, often, food must be prepared differently than I would prepare it for myself, or my children. But that's life. And that's the why you must learn as much as you can about as many ways of cooking as you can.
You never know when you will have to improvise, to substitute, or to create something that you've never made before, just to satisfy a unique situation.
No, I don't feel it disrespectful of you to not follow my advise. After all, that's just what it is, advise, not gospel. I aplaud you for taking a chance and trying something new.
Seeeeeya; Goodweed of the North