Hope,
There would certainly be a few here who would seem to fit the second of these definitions. They exude the same degree of confidence in scientific knowledge and techniques as some exude in creationism.
That's clearly not true - it's fundamental to the methods of science that its theories include a falsifiability test precisely because those who develop them are
not confident to the absolute degree that creationists are. What falsifiability tests do creationists offer, or for that matter do you propose in respect of your "God" claim?
As Daniel Dennett says:"when someone puts forward a scientific theory that [religious critics] really don't like, they just try to discredit it as 'scientism"...
...which leads us to Trollboy, who just caricatures the term to mean something like, "science will eventually find out everything and nothing else can" whereas it more properly means, "science is the only means we have that regularly and reliably allows us to access and investigate the world as it appears to be, mediated by intersubjective experience". I've no idea whether there are absolute truths, and nor for that matter whether science is a reliable guide to what they might be. I do though know that it creates with remarkable success models that have explanatory power and that enable us to build things like power stations and satellites that actually
work. And I know that because intersubjective experience tells me so.
By contrast those who would posit "God" and place it outwith the purview of science by calling it immaterial offer instead to demonstrate their claims what exactly? Assertions? Bad logic? Trollboy-style pathological dishonesty?
See, that's your problem. Rather than lie about what science actually entails in the hope that no-one notices that the cupboard of methods to investigate religious claims is bare, isn't it for the theist who presumes to evangelise to provide an alternative method of his own to do the job? You can refer to "experience" as much as you like, but as we all know that personal experience is notoriously one of the most unreliable methods of determining cause, it's all a bit thin I'm afraid.