I forgot to include part of my point in my prior response, MD. It's not only about whether they are skilled or not. It's also about what they know about you. If someone knows I'm trained, and something about my training, they are going to try to take away weapons I'm likely to use. If they don't know that, they can't know to block those specific weapons.Well that really only reenforces my point. If you are prepared for a skilled opponent that is familiar with your skillset, you will be better prepared for an unskilled that does not.
By the same token if your style only works on unskilled opponents that aren't prepared, it might be time for some upgrades!