I ordered 2 of these LED dimmable bulbs to see if they would work in my lounge with a new dimmer switch just installed (a Varilight V-Pro which is designed for dimming LEDs). They went in alongside 4 old-school incandescent 60W bulbs which we've had for 9 years, 2 bulbs in each of 3 lights, of the candle-stick variety. This let me test them side-by-side with the old bulbs.
Straight off, because of the design of the bulb, the light is only radiated from the top half, as the lower half is blocked by the metallic heat sink or whatever it is - so you only get a hemi-sphere of light (180 deg) rather than the usual 360 degrees. This may or may not bother you, I could probably live with it, its an interesting effect. The colour of the light is pretty white, in fact a lot more so than the bulbs it replaced, which I'm not so keen on.
The major problem for me is that although they are pretty bright on full (I would guess similar to a 40-45W bulb), when dimmed to the minimum they are still at roughly 25-30% brightness, whereas the older incandescents go right down to "barely visible" (maybe 5%). Sometimes, e.g. when watching movies, I want the lights to go really low, just enough to see by and that's it. It seems these bulbs cannot do that, I assume its a function of the LED bulb because the normal ones will do it, plus the dimmer switch is rated I believe 10W-400W so it should be able to handle the low wattage. For this reason, I can't use them as I intended.
Its not a wasted effort, I'm sure I can find another location for them, but be warned, if you specifically want dimmable LEDs that "go low" then look elsewhere...