Thermal Industries question

[windowshopper]

A local company has started selling this brand of windows. I am curious about one of the features about these windows. The window does not have release tabs to tilt the window, you just grab the window and pull on it.

Would wear over time by popping that in and out cause play in the window on the sides?

Would this create a situation where someone could just push in on the window and gain access to the home if it was not locked?

Can anyone comment on the quality of these windows?

Thanks