I would add that consistently applying the epistemology of the Scientific Method (all truths are conditional on verified evidence) would necessitate verifying evidence of the value of the Scientific Method. This has been done by some skeptics.
There is plenty of existential evidence for the effectiveness of the Scientific Method. Protip: you're typing on one piece now. By every objective measure of which I know, life has been on the whole vastly improved by the application of science and scientific thinking.
I maintain that acceptance of all truths as conditional is far more defensible a position than any of Truth as an absolute. Belief (as
belief; not hypothesis) has little do with knowledge itself, and more to do with our convictions in our opinions concerning knowledge.