Handheld Wi-Fi 2-way radios

An AC just discovered hand held 2-way Wi-Fi radios and wants to know if anyone has any experience with them. Likely the most popular product is the ICOM IP100H. There have been a couple of basic radio enthusiast reviews, which outline the short-range from hand-held to AP, and higher price than conventional radios, but not much else.

Traditional license-free 2-way radios like FRS & MURS (in North America) while cheaper and with multi-mile range, only offer a small number of non-overlapping channels, and scrambling or other privacy features are strictly forbidden by the FCC. As shown in the illustration, the ideal use-case for Wi-Fi radios seems to be dense areas with obstacles, which already have several Wi-Fi APs deployed, such as high-rise building complexes.